One-legged caterpillars span hypercubes. - Ivan Havel; Petr Liebl (J. Graph Theory, 1986)

Euler cycles in the complete graph K2m+1. - Tomás Dvorák; Ivan Havel; Petr Liebl (Discret. Math., 1997)

The Diameter of the Cube-Connected Cycles. - Ivan Fris; Ivan Havel; Petr Liebl (Inf. Process. Lett., 1997)

Euler Cycles in K2m Plus Perfect Matching. - Tomás Dvorák; Ivan Havel; Petr Liebl (Eur. J. Comb., 1999)